A remotely actuated magnetic actuator for microsurgery with piezoresistive feedback

Son, Il-Seok; Lal, Amit

doi:10.1109/mmb.2002.1002341

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…The force that a magnetic field exerts on a magnetised material can also be used for actuation purposes [50][51][52][53][54]. If a piece of these materials is put inside a small magnetic field, the magnetic domains inside it align themselves with the field and the material is magnetised.…”

Section: Magnetic Transductionmentioning

confidence: 99%

Transduction Mechanisms

Bahreyni

2009

Fabrication and Design of Resonant Microdevices

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Section: Magnetic Transductionmentioning

confidence: 99%

Transduction Mechanisms

Bahreyni

2009

Fabrication and Design of Resonant Microdevices

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Fabrication of folding microstructures actuated by polypyrrole/gold bilayer

Liu

Fanning

et al.

TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (

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We have developed a method to fabricate substrates that can fold themselves. ' The microstructures are actuated by an electroactive polymer, polypyrrole (Pry). A series of bilayers is defined on one surface of the substrate, and hinges are formed by etching the substrate from the back side to undercut the bilayers. A shape-morphing object is demonstrated that comprises multiple hinges. This object was able to bend both forward and backward. We are applying this technology to fabricate medical devices that operate in bio-fluids.

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A pyroelectric-piezoelectric valve for integrated microfluidics

Duggirala¹,

Son²,

Lal³

TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (

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A low-voltage, low-power microvalve that can be actuated either elecfrical!y using the inversepiezoelecbic effect or thermally using the pyroelectric effect is presented here. The valve consists of external lasermachined bulk piezoelectric unimorph actuators mechanically linked to surface micromachined nickel cap structures anchored on silicon nitride membrane tethers. A self-aligned mechanical linking process for the assembly of external bulk piezoelectric actuators to micromachined silicon structures enables motion from the piezoelectric unimorph to be coupled to tethers. Valve cap strokes as large as 4.8 pm were realized for an actuation voltage of 10 V consuming switching energy of 600 nJ. Linear control of fluid flow in the 0 -50 pYmin was accomplished with pulse width modulated 10 Vpp drive at frequencies as high as 1 W z .

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A remotely actuated magnetic actuator for microsurgery with piezoresistive feedback

Cited by 4 publications

References 4 publications

Transduction Mechanisms

Transduction Mechanisms

Fabrication of folding microstructures actuated by polypyrrole/gold bilayer

A pyroelectric-piezoelectric valve for integrated microfluidics

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